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Abreu C, Carnegie-Peake L, Taprogge J, Gape P, Rushforth D, Barker C, Divoli A, Gear J, McAreavey L, Murray I, Pratt B, Rojas B, Vavrova L, Wong K, Newbold K, Flux G. INSPIRE clinical dosimetry study: initial results. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00187-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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2
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Llombart Cussac A, Pérez-Garcia J, Blanch S, Tolosa P, Ruiz Borrego M, Gion Cortes M, Fernádez A, Urruticoechea A, Galve E, Cueva Banuelos J, Ponce J, Alonso J, Capelán M, Martínez E, Bermejo De Las Heras B, Rojas B, Martos T, López A, Gómez-Peralta F, Cortés J. 129TiP Metformin (MF) in the prevention of hyperglycemia (HG) in patients (pts) with PIK3CA-mutated, hormone receptor (HR)[+]/HER2[–] advanced breast cancer (ABC) treated with alpelisib (ALP) plus fulvestrant (F): METALLICA. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.03.143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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3
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Llombart A, Andrés R, Anton Torres A, Martinez N, Rodriguez C, Sánchez-Rovira P, Rojas B, Ruiz Borrego M, Bermejo B, Martinez de Dueñas E. Impact of the 21-gene assay on treatment decisions in high-risk patients with ER-positive HER2-negative early breast cancer: Results of the KARMA Dx study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz095.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Rönkä K, Mappes J, Michalis C, Kiviö R, Salokannas J, Rojas B. Can multiple-model mimicry explain warning signal polymorphism in the wood tiger moth, Arctia plantaginis (Lepidoptera: Erebidae)? Biol J Linn Soc Lond 2018. [DOI: 10.1093/biolinnean/bly042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- K Rönkä
- Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, FI, Finland
| | - J Mappes
- Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, FI, Finland
| | - C Michalis
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - R Kiviö
- Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, FI, Finland
| | - J Salokannas
- Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, FI, Finland
| | - B Rojas
- Centre of Excellence in Biological Interactions, Department of Biological and Environmental Science, University of Jyväskylä, FI, Finland
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Ramirez J, Salobrar-Garcia E, Ajoy D, Gonzalez-Martin R, de Hoz R, Salazar J, Rojas B, Triviño A, Ramirez A. Qualitative early signs of microglial activation in mice retinas contralateral to experimental glaucoma. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.04126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J.M. Ramirez
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - E. Salobrar-Garcia
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - D. Ajoy
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
| | - R. Gonzalez-Martin
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
| | - R. de Hoz
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - J.J. Salazar
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - B. Rojas
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - A. Triviño
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - A.I. Ramirez
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
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GONZALO-SUAREZ B, Ramirez A, de Hoz R, Salazar J, Rebolleda G, Casas-Llera P, Rojas B, Triviño A, Ramirez J. Ultraestructural analysis of human pre-Descemet's tissue. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0s038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. GONZALO-SUAREZ
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Department of Glaucoma; Hospital Ramón y Cajal- Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS; Madrid Spain
| | - A.I. Ramirez
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - R. de Hoz
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - J.J. Salazar
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - G. Rebolleda
- Department of Glaucoma; Hospital Ramón y Cajal- Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS; Madrid Spain
| | | | - B. Rojas
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - A. Triviño
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - J.M. Ramirez
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina; Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
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de Hoz R, RAMIREZ A, Gonzalez-Martin R, Ajoy D, Salazar J, Salobrar-Garcia E, Rojas B, Triviño A, Ramirez J. Early signs of microglial activation in mice retinas contralateral to experimental glaucoma: quantitative analysis of cells number, processes retraction and reorientation. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.04125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. de Hoz
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - A.I. RAMIREZ
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - R. Gonzalez-Martin
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
| | - D. Ajoy
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
| | - J.J. Salazar
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Óptica, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - E. Salobrar-Garcia
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - B. Rojas
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - A. Triviño
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
| | - J.M. Ramirez
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Facultad de Medicina, Oftalmologia y ORL; Universidad Complutense de Madrid; Madrid Spain
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Ramirez A, Garcia-Anton M, Salazar J, de Hoz R, Rojas B, Garcia-Feijoo J, Triviño A, Escribano J, Ramirez J. Enzymatic Activity of CYP1B1 in primary congenital glaucoma goniodysgenesis and its relation with histological alterations. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0s067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A.I. Ramirez
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Óptica; Universidad Complutense de Madrid; Madrid Spain
| | - M. Garcia-Anton
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Medicina; Universidad Complutense de Madrid; Madrid Spain
| | - J.J. Salazar
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Óptica; Universidad Complutense de Madrid; Madrid Spain
| | - R. de Hoz
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Óptica; Universidad Complutense de Madrid; Madrid Spain
| | - B. Rojas
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Medicina; Universidad Complutense de Madrid; Madrid Spain
| | - J. Garcia-Feijoo
- Servicio de Oftalmologia; Hospital Clinico San Carlos; Madrid Spain
| | - A. Triviño
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Medicina; Universidad Complutense de Madrid; Madrid Spain
| | - J. Escribano
- Área de Genética- Facultad de Medicina/Instituto de Investigación en Discapacidades Neurológicas IDINE; Universidad de Castilla-La Mancha; Albacete Spain
| | - J.M. Ramirez
- INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Universidad Complutense de Madrid; Madrid Spain
- Oftalmologia y ORL; Facultad de Medicina; Universidad Complutense de Madrid; Madrid Spain
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Salazar J, de Hoz R, Ramirez A, Salobrar-Garcia E, Rojas B, VidalSanz M, Triviño A, Ramirez J. Macrogilal retinal cells show a bilateral early activation in a mouse model of unilateral laser-induced experimental glaucoma. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0t020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J.J. Salazar
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - R. de Hoz
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - A.I. Ramirez
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Óptica; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - E. Salobrar-Garcia
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - B. Rojas
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - M. VidalSanz
- Laboratorio Oftalmología Experimental; Departamento de Oftalmnología; Universidad de Murcia; Murcia Spain
| | - A. Triviño
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
| | - J.M. Ramirez
- Ophthalmology; INST INVEST OFTALMOLOGICAS RAMON CASTROVIEJO; Madrid Spain
- Facultad de Medicina; Universidad Complutense de Madrid; Oftalmologia y ORL; Madrid Spain
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Lopez-Cuenca I, de Hoz R, Salobrar-Garcia E, Rojas B, Ramirez AI, Salazar JJ, Trivino A, Ramirez JM. [Situs inversus of the optic nerve. A case report]. Rev Neurol 2017; 64:509-513. [PMID: 28555457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Situs inversus of the optic nerve is a congenital anomaly characterised by the emergence of the vessels in the retina towards the nose rather than in a temporal direction. It is caused by an anomalous insertion of the optic stalks into the optic vesicle that gives rise to dysversion of the head of the optic nerve. It is not an isolated condition and usually appears jointly with tilted disc syndrome and in patients with myopia. It is characterised by the presence of inferior conus atrophy, deficiencies in the temporal visual field, refraction defects and ambliopy. CASE REPORT A 22 years-old female who attended an ophthalmological examination due to severe frontal headaches accompanied by halos and loss of sharpness in her sight. From the results of the ophthalmetric and ophthalmological examination she was diagnosed as suffering from a condition consistent with this congenital anatomical anomaly. CONCLUSIONS Situs inversus of the optic nerve is a rare condition that may appear in isolation or accompanied by other pathologies. Application of the visual field test and new diagnostic techniques, such as optical coherence tomography, facilitates the differential diagnosis of this situation. Its prevalence remains unknown, as it is not included in the register of rare diseases. Moreover, the scant number of patients studied and the scarce literature on this anomaly do not allow us to know whether the defects it causes develop over time. It would therefore be important to perform an ophthalmological follow-up of patients with situs inversus of the optic nerve.
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Affiliation(s)
| | - R de Hoz
- Universidad Complutense, Madrid, Espana
| | | | - B Rojas
- Universidad Complutense, Madrid, Espana
| | | | | | - A Trivino
- Universidad Complutense, Madrid, Espana
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Salobrar-Garcia E, Garcia Y, Lostao C, Jañez L, de Hoz R, Rojas B, Salazar J, Ramirez A, Gil P, Yubero R, Triviño A, Ramirez J. Maculopapillary analysis in the posterior pole in patients with mild Alzheimer's disease. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gallego B, De Garcia P, Sebastian A, De Hoz R, Salazar J, Rojas B, Trivino A, Ramirez J. Counting microglial cells in the adult rodent retina. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Salobrar-Garcia E, Leal M, Hoyas I, Salazar J, Ramirez A, de Hoz R, Rojas B, Gil P, Yubero R, Triviño A, Ramirez J. Early changes in mild Alzheimer's disease in the neuroretinal rim segmentation. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ramirez A, García-Antón M, Rojas B, Salazar J, de Hoz R, Triviño A, Escribano J, García-Feijoo J, Ramírez J. Transmission electron microscopy study of the collagens of the trabecular meshwork in glaucoma patients. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fernandez-Navarro J, Rojas B, de Hoz R, Ramirez A, Gallego B, Salazar J, Triviño A, Ramirez J. The retinal macroglia in hypercholesterolemic rabbits: neuroprotective effect of a non-lipid-lowering statin dose. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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de Hoz R, Ramírez AI, Salazar JJ, Rojas B, Ramírez JM, Triviño A. Substance P and calcitonin gene-related peptide intrinsic choroidal neurons in human choroidal whole-mounts. Histol Histopathol 2008; 23:1249-58. [PMID: 18712677 DOI: 10.14670/hh-23.1249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To determine the presence in the human choroid of substance P (SP)-and calcitonin gene-related peptide (CGRP) positive intrinsic choroidal neurons (ICNs), choroidal whole-mounts were processed for indirect immunofluorescence. An antibody to a component of the neuronal cytoskeleton, neurofilament 200 kDa (NF-200), was combined with antibodies to SP and to CGRP (neuropeptides proper to the sensory nervous system). The human choroid possesses numerous SP(+) and CGRP(+) ICNs. These neurons were observed in the suprachoroid, both in isolation and forming microganglia. For both types of ICNs studied, neurons were more numerous in the temporal than in the nasal regions. In both locations, SP(+) and CGRP(+) ICNs were more abundant in the central choroid (the choroid underneath the macular area of the retina), with cell density diminishing outwards to the choroidal periphery. There were no appreciable differences between the two populations of ICNs studied in terms of size, morphology or immunostaining characteristics. In conclusion, given that peripheral sensory innervation could be involved in the regulation of both choroidal blood flow and vascular architecture, the SP(+) and CGRP(+) ICNs described for the first time in the present work may be involved in these mechanisms of vascular regulation.
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Affiliation(s)
- R de Hoz
- Ramón Castroviejo Institute for Ophthalmic Research, Complutense University, Madrid, Spain
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Rojas B, Ramírez AI, de-Hoz R, Salazar JJ, Remírez JM, Triviño A. [Structural changes of the anterior chamber angle in primary congenital glaucoma with respect to normal development]. ACTA ACUST UNITED AC 2006; 81:65-71. [PMID: 16511712 DOI: 10.4321/s0365-66912006000200005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To compare findings of normal angles with those from primary congenital glaucoma in order to clarify the pathogenic mechanisms of the disease and to explain the success of surgical treatment in some of these patients. METHODS Adult normal eyes from cadavers and fragments of surgical trabeculectomies from patients with primary congenital glaucoma previously treated with goniotomy were studied. Eyes were processed for examination using light microscopy and scanning electron microscopy techniques. RESULTS The following was evident in congenital glaucoma: 1) high iris insertion; 2) no observable pre-trabecular membrane, but enlarged trabeculae with diminished inter-trabecular spaces; 3) Schlemm's canal (SC) apparently normal, with vacuoles in the wall indicating normal functioning; 4) sectioning of the abnormal trabecular tissue during goniotomy allowed repositioning of the angle structures and hence the appearance of the angular recess. CONCLUSIONS Anomalies of the trabecular structures in primary congenital glaucoma do not always parallel an abnormal development of the SC and the collector channels. This fact could explain the success of goniotomy in this type of glaucoma.
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Affiliation(s)
- B Rojas
- Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Universidad Complutense, Madrid, Spain
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de Hoz R, Salazar JJ, Ramírez AI, Rojas B, Triviño A, Ramírez JM. [A comparative study of choroidal innervation in the human and the rabbit (oryctolagus cuniculus)]. Arch Soc Esp Oftalmol 2006; 81:463-70. [PMID: 16933170 DOI: 10.4321/s0365-66912006000800007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
OBJECTIVE To analyze morphological differences between the choroidal innervation of the human and the rabbit, the latter being a species frequently used as an experimental model of human ocular diseases. METHODS Twelve human and 12 rabbit choroidal whole mounts were processed using an indirect immunohistochemical technique, peroxidase-anti-peroxidase and antibodies against 200 kD neurofilament. RESULTS Choroidal nerve fibers were perivascular and intervascular. Perivascular fibers surrounded all arteries forming a network that was more developed in the rabbit. In humans, intervascular fibers were mainly concentrated at the posterior pole where they formed a denser and more highly organized plexus than in the rabbit, which did not exhibit a preferential location for these fibers. Human choroidal ganglion cells were far more numerous than in the rabbit and were concentrated in a circumferential area corresponding to the entrance of the short posterior ciliary arteries of the submacular area. In the rabbit, these cells were restricted to the peripheral choroid. CONCLUSIONS Some differences were observed between human and rabbit choroidal innervation. The abundance of ganglion cells and their preferential distribution could be necessary to maintain a constant blood flow in the central area of the human choroid. The lack of organization of rabbit choroidal innervation at the posterior pole could be associated with an absence of the macula. These differences, along with peculiarities of retinal vascularization, should be taken into consideration when using the rabbit as an experimental model to study human eye diseases in which regulation of choroidal blood flow is involved.
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Affiliation(s)
- R de Hoz
- Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Universidad Complutense de Madrid, España
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Rojas B, Cuhna R, Zafirakis P, Ramirez JM, Lizan-garciía M, Zhao T, Foster CS. Cell populations and adhesion molecules expression in conjunctiva before and after bone marrow transplantation. Exp Eye Res 2005; 81:313-25. [PMID: 16129099 DOI: 10.1016/j.exer.2005.02.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2004] [Revised: 01/31/2005] [Accepted: 02/10/2005] [Indexed: 11/19/2022]
Abstract
We were interested to analyse the composition of the cellular infiltrate and adhesion molecules expression in the conjunctiva before and at least one hundred days after autologous and allogenic bone marrow transplantation (BMT) and its relation with the presence of dry eye. We used immunohistochemistry on cryopreserved human conjunctiva with monoclonal antibodies to T-lymphocytes (CD3, CD4 and CD8), B-lymphocytes (CD19), macrophages (CD14), natural killer cells (NK, CD57), intercellular adhesion molecule 1 (ICAM-1), E-selectin, vascular cell adhesion molecule-1 (VCAM-1), lymphocyte function associated antigen-1 (LFA-1), very late antigen-4 (VLA-4), interleukin 2 receptor (IL2r, CD25) and HLA-DR. Our autologous recipients had no graft-versus-host disease (GVHD) but allogenic patients had chronic GVHD. After autologous BMT the conjunctiva had significantly more: (1) T lymphocytes (CD3+, CD4+, CD8+) in the epithelium; (2) CD4+ and CD14+ cells in the stroma; and (3) VLA-4 expression in the stroma than before BMT. After allogenic BMT, the conjunctiva exhibited a significant increase of: (1) CD3+ and CD14+ cells in the epithelium; (2) T lymphocytes (CD3+, CD4+, CD8+) and CD14+ cells in the stroma; and (3) VLA-4 and LFA-1 expression in the stroma than before BMT. After the engraftment, the comparison between autologous and allogenic recipients revealed that: (1) there were no significant differences in adhesion molecule expression; (2) the epithelium of autologous recipients had significantly more CD3+ cells; and (3) the stroma of allogenic patients had significantly more CD3+ and CD8+ cells. Among allogenic recipients, CD14+ cells were significantly increased both in the epithelium and in the stroma of patients with signs or symptoms of dry eye in comparison with patients without ocular involvement. Additionally, those having keratoconjunctivitis sicca (KCS) had CD4/CD8 ratios significantly higher than those without KCS. In conclusion, in the conjunctiva after autologous BMT a subclinical cell mediated immune reaction seems to take place. The conjunctivitis of chronic GVHD is complex, with T cells and macrophages dramatically contributing to the process.
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Affiliation(s)
- B Rojas
- Hilles Immunology Laboratory, Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, 243 Charles St, Boston, MA 02114, USA.
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20
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Abstract
To determine the distribution of NPY and TH human choroidal innervation, choroidal whole-mounts were processed for indirect immunofluorescence. An antibody to a component of the neuronal cytoskeleton, neurofilament 200 kDa (NF-200) was used to identify neurons and axons. A double immunostaining was performed, antibodies against NF-200 being combined with antibodies against neuropeptide Y (NPY) and tyroxine hydroxylase (TH). Fibers containing both NPY and TH were distributed in three plexuses, one in the suprachoroid large-sized vessel layer, and two in the medium-sized vessel layer. Intrinsic choroidal neurons (ICNs) containing NPY and TH were observed in the suprachoroid. The TH(+) ICNs were located in the medium-sized vessel layer. Overall, NPY(+) and TH(+) ICNs were more frequent in the central temporal area, both in isolation and forming microganglia. We also detected small spindle elements intensely immunoreactive to TH(+) and distributed mainly in the suprachoroid from the equator to the periphery. In conclusion, the human choroid contains abundant NPY and TH nerve fibers related to chroroidal vascular structures; it further possesses NPY(+) and TH(+) ICNs which contribute to the choroidal self-regulation persisting after sympathetic denervation. Additionally, these ICNs may at least partially explain why the choroidal blood flow does not respond to the factors that influence systemic vascular control. The preferential location of these cells in the submacular area suggests that dysfunction or degeneration of these cells may be a factor in vascular pathologies found in ocular disease, such as diabetic macular edema or age-related macular degeneration.
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Affiliation(s)
- A Triviño
- Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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Rosales C, Márquez L, González J, Perera R, Rojas B, Vivas M. Free radical grafting of diethylmaleate on linear low-density polyethylenes. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10621] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Salazar JJ, Ramírez AI, Rojas B, Triviño A, Ramírez JM. [Apoptosis in ischemic optic neuropathy]. Arch Soc Esp Oftalmol 2000; 75:819-24. [PMID: 11151279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
PURPOSE A study of human eyes with non-arteritic ischaemic optic neuropathy (NAION) to determine whether there is apoptosis and whether this is accompanied by cell necrosis mechanisms. METHODS Transmission electron microscopy was used to examine the retinas of eyes with NAION. RESULTS There was a large number of apoptotic ganglion cells. The lesion was not confined to this retinal layer but also affected the inner nuclear layer, where Müller glia with fagocytic capacity were detected. In this layer apoptosis alternated with necrosis in all of the cell types existing in this level: bipolar cells, amacrine cells and horizontal cells. The outer nuclear layer can also suffer lesion, essentially by induction of choroid ischaemia to that level. Again, apoptosis was observed at the photoreceptor level, where there was also death by heterophagy, although this was less frequent. CONCLUSIONS The behaviour of NAION in humans is similar to that found in experimental models. Apoptosis mechanisms develop, alternating with cell necrosis in the nuclear level.
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Affiliation(s)
- J J Salazar
- Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Facultad de Medicina, Universidad Complutense de Madrid, España.
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23
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Abstract
PURPOSE To determine the efficacy of medical treatment of cystoid macular edema (CME) in patients with uveitis. METHODS Retrospective study of 40 patients (57 eyes) with uveitis and CME. Inclusion criteria were presence of CME with minimal and no macular pathology, or vascular disease which could account for CME. Patients who had undergone intraocular surgery or had visual acuity (VA) of > or = 20/40 were excluded. The diagnosis of CME was based on clinical and/or angiographic findings. Three treatment groups were defined: (1) transseptal injection of steroids (n=13 eyes); (2) systemic non steroidal anti-inflammatory drugs (NSAIDs) (n=11 eyes); both 1 and 2 (n=33 eyes). RESULTS Overall, 79% of eyes improved 3 or more lines of Snellen VA after treatment: 51% improved 4 or more lines. The average number of lines improved was 3.8 for eyes treated with transseptal injections of steroids, 2.9 for eyes treated with NSAIDs, and 4 for eyes treated with both. For all 3 treatment groups between 60-70% of eyes improving 2 or more lines reached best VA only after a minimum of 6 months of follow up. CONCLUSIONS CME, a vision threatening complication of uveitis, respond fairly well to medical treatment; however, the best VA is achieved after several months. The improvement in VA did not differ markedly among the three treatment groups.
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MESH Headings
- Adolescent
- Adult
- Aged
- Anterior Chamber/pathology
- Anti-Inflammatory Agents, Non-Steroidal/administration & dosage
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Carbonic Anhydrase Inhibitors/administration & dosage
- Carbonic Anhydrase Inhibitors/therapeutic use
- Child
- Drug Administration Routes
- Drug Therapy, Combination
- Female
- Fluorescein Angiography
- Fundus Oculi
- Glucocorticoids/administration & dosage
- Glucocorticoids/therapeutic use
- Humans
- Macula Lutea/pathology
- Macular Edema/complications
- Macular Edema/diagnosis
- Macular Edema/drug therapy
- Male
- Middle Aged
- Recurrence
- Retrospective Studies
- Uveitis, Anterior/complications
- Uveitis, Anterior/diagnosis
- Uveitis, Anterior/drug therapy
- Uveitis, Intermediate/complications
- Uveitis, Intermediate/diagnosis
- Uveitis, Intermediate/drug therapy
- Uveitis, Posterior/complications
- Uveitis, Posterior/diagnosis
- Uveitis, Posterior/drug therapy
- Visual Acuity
- Vitreous Body/pathology
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Affiliation(s)
- B Rojas
- Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Boston, MA 02114, USA
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24
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Abstract
Complete or total arhinia, in which there is absence of the soft tissue of the nose, is extremely rare. The embryological origin of the defect is thought to be maldevelopment of the paired nasal placodes. Available neonatal case descriptions have reported the frequent coexistence of other facial anomalies. This report is the first to describe the antenatal diagnosis of total arhinia confirmed after delivery. Sonographic views of the fetal profile, showing an absence of the nose led to consideration of the diagnosis.
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Affiliation(s)
- W Cusick
- Stamford Hospital, Division of Matemal-Fetal Medicine, CT 06612, USA.
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25
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Abstract
PURPOSE To report a series of patients with uveitis and cataract who had undergone cataract extraction with posterior chamber intraocular lens implantation and who subsequently had the intraocular lens removed because of progressive intraocular damage from inflammation. METHODS Review of the records of 19 patients after removal of a posterior chamber intraocular lens. The decision to perform surgery was based on standard criteria after evaluation at a single uveitis referral center. RESULTS The complications leading to intraocular lens removal were perilental membrane (eight eyes), chronic low-grade inflammation not responding to anti-inflammatory treatment (eight eyes), and cyclitic membrane resulting in hypotony and maculopathy (three eyes). After intraocular lens removal the inflammation subsided and the visual acuity improved or stabilized in 14 of the 19 eyes. The causes of further reduction in the visual acuity of the other five patients were macular edema (two patients), maculopathy resulting from hypotony (one patient), retinal detachment (one patient), and vitreous hemorrhage (one patient). CONCLUSIONS Intraocular lens implantation can form part of a reasonable plan for visual rehabilitation of patients with uveitic cataract, but inclusion of an intraocular lens in the plan is not always in the overall long-term best interest of the patient. Intraocular lens removal may salvage useful vision for patients who continue to exhibit complications secondary to uveitis after cataract extraction and intraocular lens implantation, provided the intraocular lens is removed before irreparable damage has been done to macula or optic nerve.
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Affiliation(s)
- C S Foster
- Uveitis and Immunology Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston 02114, USA.
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26
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Martínez-Zaguilán R, Raghunand N, Lynch RM, Bellamy W, Martinez GM, Rojas B, Smith D, Dalton WS, Gillies RJ. pH and drug resistance. I. Functional expression of plasmalemmal V-type H+-ATPase in drug-resistant human breast carcinoma cell lines. Biochem Pharmacol 1999; 57:1037-46. [PMID: 10796074 DOI: 10.1016/s0006-2952(99)00022-2] [Citation(s) in RCA: 116] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A major obstacle for the effective treatment of cancer is the phenomenon of multidrug resistance (MDR) exhibited by many tumor cells. Many, but not all, MDR cells exhibit membrane-associated P-glycoprotein (P-gp), a drug efflux pump. However, most mechanisms of MDR are complex, employing P-gp in combination with other, ill-defined activities. Altered cytosolic pH (pHi) has been implicated to play a role in drug resistance. In the current study, we investigated mechanisms of pHi regulation in drug-sensitive (MCF-7/S) and drug-resistant human breast cancer cells. Of the drug-resistant lines, one contained P-gp (MCF-7/DOX; also referred to as MCF-7/D40) and one did not (MCF-7/MITOX). The resting steady-state pHi was similar in the three cell lines. In addition, in all the cell lines, HCO3- slightly acidified pHi and increased the rates of pHi recovery after an acid load, indicating the presence of anion exchanger (AE) activity. These data indicate that neither Na+/H+ exchange nor AE is differentially expressed in these cell lines. The presence of plasma membrane vacuolar-type H+-ATPase (pmV-ATPase) activity in these cell lines was then investigated. In the absence of Na+ and HCO3-, MCF-7/S cells did not recover from acid loads, whereas MCF-7/MITOX and MCF-7/DOX cells did. Furthermore, recovery of pHi was inhibited by bafilomycin A1 and NBD-Cl, potent V-ATPase inhibitors. Attempts to localize V-ATPase immunocytochemically at the plasma membranes of these cells were unsuccessful, indicating that V-ATPase is not statically resident at the plasma membrane. Consistent with this was the observation that release of endosomally trapped dextran was more rapid in the drug-resistant, compared with the drug-sensitive cells. Furthermore, the drug-resistant cells entrapped doxorubicin into intracellular vesicles whereas the drug-sensitive cells did not. Hence, it is hypothesized that the measured pmV-ATPase activity in the drug-resistant cells is a consequence of rapid endomembrane turnover. The potential impact of this behavior on drug resistance is examined in a companion manuscript.
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Affiliation(s)
- R Martínez-Zaguilán
- Department of Biochemistry, University of Arizona Health Sciences Center, Tucson 85724-5042, USA
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27
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Rojas B, Cabrera ME, Kliwadenko W, Avilés JJ. [Priapism in a patient with chronic myeloid leukemia]. Rev Med Chil 1998; 126:978-80. [PMID: 9830750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Priapism is a rare complication of hematological diseases. Among leukemia, it is most frequently seen in patients with chronic myeloid leukemia, due to the high leukocyte counts that these patients achieve. We report a 22 years old male who presented with a priapism lasting more than 24 hours. Thirty six hours after admission and subsequent to a leukopheresis, penile relaxation was obtained. Despite good hematological response to therapy, an extensive penile and uretral necrosis, associated to an Acinetobacter infection, ensued between the fourth and fifth day of admission, that required surgical treatment.
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Affiliation(s)
- B Rojas
- Departamento de Medicina, Universidad de Chile, Santiago
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28
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Tesavibul N, Dorfman D, Sangwan VS, Christen W, Panayotis Z, Rojas B, Foster CS. Costimulatory molecules in ocular cicatricial pemphigoid. Invest Ophthalmol Vis Sci 1998; 39:982-8. [PMID: 9579477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
PURPOSE To examine normal and inflamed conjunctiva from patients with ocular cicatricial pemphigoid (OCP) for the presence of costimulatory molecule CD28 and its ligands B7-1 (CD80) and B7-2 (CD86). METHODS Conjunctival biopsy specimens from 12 patients with OCP and from five healthy persons undergoing cataract surgery were analyzed by light microscopy and immunohistochemical examination with monoclonal antibody probes for CD28, B7-1, and B7-2 molecules and for mononuclear cell subtypes. RESULTS Epithelium of OCP conjunctiva showed more Langerhans' cells, B7-1-positive (+) cells, and B7-2 expression (ratio of B7-2-positive cells to antigen-presenting cells). In the substantia propria, OCP specimens showed significantly increased numbers of T cells (CD3 +), macrophages (CD68+), CD28+ cells, B7-2+ cells (CD86+), Langerhans' cells (CD1a), and B7-1+ cells (CD80). Most of the B7-2+ cells, macrophages, and Langerhans' cells were located subepithelially. B7-2 expression was significantly higher in OCP conjunctival substantia propria compared with normal conjunctiva. CONCLUSIONS The results of this study indicate that the expression of the costimulatory molecule B7-2 is upregulated in conjunctiva of patients with active OCP. This increased subepithelial B7-2 expression may contribute to the sustained immune activation in OCP conjunctiva.
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Affiliation(s)
- N Tesavibul
- Uveitis and Immunology Service, Massachusetts Eye and Ear Infirmary, Boston 02114, USA
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29
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Velasco M, Velasco F, Velasco AL, Brito F, Jiménez F, Marquez I, Rojas B. Electrocortical and behavioral responses produced by acute electrical stimulation of the human centromedian thalamic nucleus. Electroencephalogr Clin Neurophysiol 1997; 102:461-71. [PMID: 9216479 DOI: 10.1016/s0013-4694(96)95203-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Incremental, desynchronizing and spike-wave electrocortical responses and concomitant symptoms to acute electrical stimulation of the centromedian thalamic nucleus (CM) were studied in 12 patients with intractable complex partial and tonic-clonic generalized seizures. Low-frequency (6/s), 320-800 microA stimulation of the caudal-basal and central portions of CM elicited incremental recruiting and augmenting-like responses with a bilateral regional scalp distribution, with emphasis at the ipsilateral frontal (recruiting) and central (augmenting) regions, while ventral-basal CM stimulation elicited primary-like responses with a focal distribution at the ipsilateral parietal region. High-frequency (60/s), 320-800 microA stimulation of caudal-basal and central, but not ventral-basal CM, elicited EEG desynchronization and a slow negative shift of the EEG baseline with scalp distribution similar to that showed by recruiting- and augmenting-like responses. Neither incremental nor desynchronization EEG responses were accompanied by evident patient sensory or motor responses. Low-frequency (3/s), high-intensity (30 V = 2400 microA) combined stimulation of the right CM and left non-specific mesencephalic ascending pathways elicited a response similar to the typical absence attack with all EEG and clinical ingredients: S1, S2, P1 and W components of the individual spike-wave complex and generalized spike-wave discharges followed by sleep spindle EEG afterdischarges, accompanied by motionless stare, 3/s eye blinking, lip smacking and total failure to respond to visual stimuli in patients under a simple responding task.
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Affiliation(s)
- M Velasco
- U.M.R. Neurophysiology Unit, National Medical Center, IMSS, Mexico City, Mexico
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30
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Cabrera E, Rojas B, Labra S, Matutes E, Puga B. [Acute myeloid leukemia MO: clinical and laboratory characteristics]. Rev Med Chil 1997; 125:433-7. [PMID: 9460284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND A recent update of FAB classification has included a myeloid leukemia subtype with a minimal degree of differentiation, that has been denominated LMA-MO. AIM To report the clinical, morphological and immunophenotypic features of patients with LMA-MO. PATIENTS AND METHODS Eight patients, out of 368, with acute myeloid leukemia that were studied in the Hematology Laboratory of a public hospital in Santiago, were classified as LMA-MO. RESULTS Blast cell morphology was undifferentiated or of subtype FAB-L2 lymphoblastic leukemia with medium sized blasts, agranular basophilic cytoplasm, reticular nuclear chromatin and a prominent nucleolus. Cytochemical staining was negative for peroxidase and esterases, immunophenotyping showed the expression of one or more myeloid antigens (CD13, CD33) and was negative for lymphoid antigens. Immunocytochemical expression of myeloperoxidase was positive in the three cases where it was performed. Only one patient achieved complete remission and is free of disease after 36 months of follow up. All other patients died without obtaining remission, six shortly after the onset and one 12 months after. CONCLUSIONS The diagnosis of LMA-MO is essential considering its dismal prognosis.
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Affiliation(s)
- E Cabrera
- Sección Hematología, Facultad de Medicina, Universidad de Chile (Campus Oriente), Hospital del Salvador, Chile
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31
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Rojas B, Zafirakis P, Foster CS. Cataract surgery in patients with uveitis. Curr Opin Ophthalmol 1997; 8:6-12. [PMID: 10168276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Although cataract surgery for senile cataract is routine and easily performed, the decision to remove the cataract in a patient with a history of uveitis is considerably more complex and usually involves multiple considerations, related not only to the cause of the uveitis but also to the appropriate surgical procedures. The problems confronting the ophthalmologist caring for the patient with uveitis begin with the first visit. Establishing a diagnosis and controlling the inflammation are the critical elements in the treatment of the patient; these two factors will determine the incidence of cataract formation and other complications, the appropriate time for cataract removal, and the surgical strategy, as well as determine the visual outcome long before surgery occurs. Diagnosis, control of inflammation, preoperative management, particularities of the surgical techniques, and postoperative complications in patients with a history of uveitis have been reviewed previously in this section. Our aims in this article are to review the literature on this subject over the past year and to reemphasize the idea of a model of zero tolerance for inflammation to minimize the incidence of cataract and irreversible damage of ocular structures essential to good vision.
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Affiliation(s)
- B Rojas
- Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston 02114, USA
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32
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Abstract
Until recently, cataract surgery in a patient with uveitis was regarded as a hazardous procedure that yielded unpredictable and often disappointing results. With an increasing number of ophthalmologists recognizing the consequences of chronic low-grade inflammation and therefore treating uveitis patients more aggressively, with a better selection of cases for surgery, and with better surgical techniques, more patients with a history of uveitis who need cataract surgery enjoy a successful outcome than ever before. Careful management and control of inflammation preoperatively and after surgery is critical to success. An in-the-bag posterior chamber lens implant can be part of the surgical plan in selected cases. The aims of the authors in this article are to emphasize the ideas of, intolerance to inflammation, a limited tolerance for steroids to minimize the incidence of cataract and irreversible damage of ocular structures essential to good vision, and strict criteria for selection and management of those patients with uveitis who need cataract surgery.
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Affiliation(s)
- B Rojas
- Massachusetts Eye and Ear Infirmary, Boston 02114, USA
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33
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Abstract
Exertional rhabdomyolysis can destroy muscle but the pathophysiology is unknown. Using intracellular selective microelectrodes, we found that intracellular Ca2+ concentration ([Ca2+]i) was 1.27 (0.17) mumol/L (median and interquartile range) in skeletal-muscle biopsy specimens from patients with exertional rhabdomyolysis compared with 0.12 (0.01) mumol/L in controls. 3 days treatment with dantrolene, a drug that inhibits Ca2+ release from the sarcoplasmic reticulum, decreased [Ca2+]i to 0.22 (0.05) mumol/L and accelerated patients' recovery. This study demonstrated that exertional rhabdomyolysis is associated with elevated [Ca2+]i, and that dantrolene has a beneficial effect in this syndrome.
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Affiliation(s)
- J R López
- Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas, Caracas
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34
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Lopez JR, Rojas B, Parthe V, Gonzalez-Gay MA. Dysfunction of myoplasmic Ca2+ regulation in skeletal muscle from predialytic uremic patients. Nephron Clin Pract 1995; 70:270. [PMID: 7566321 DOI: 10.1159/000188600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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35
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Salvo A, Maldonado A, García J, Leone A, Rojas B, Riedel I. [Uncomplicated acute male and female gonorrhea: treatment with a single oral dose of epicillin-probenecid]. Rev Med Chil 1989; 117:406-10. [PMID: 2519394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We treated 142 patients with acute uncomplicated gonorrhea with a single oral dose of epiciline-probenecid. All cases were confirmed by culture on Thayer Martin medium at the first day and they were all laboratory tested seven days after treatment. At the control time the patients were asked about drug tolerance. All isolated strains were tested for beta-lactamase producing capacity and susceptibility to epiciline and penicillin. All patients who were culture positive seven days after treatment were considered to be treatment failures. The treatment was effective in 94.4% and we detected 8 Neisseria gonorrhoeae strains resistant to penicillin (5.6%); seven of these were PPNG strains. Tolerance to the drug was excellent in 90% of all cases; 9% presented minor adverse reactions for a short period of time. Therefore, the combination of epiciline-probenecid is a valid alternative for routine treatment of acute uncomplicated gonorrhea.
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36
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Cuchacovich M, Mordojovich MA, Verdaguer J, Rojas B, Salazar R, Gatica H, Astorga G. [Patients with primary anterior uveitis. Determination of circulating immune complexes]. Rev Med Chil 1989; 117:129-34. [PMID: 2487949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The level of circulating immune complexes (CIC) in 31 patients with primary anterior uveitis was determined by an ELISA method (C1q in solid phase). In addition, we measured antinuclear antibodies (ANA), HLAB 27, C3 and C4. Increased levels of CIC were found in 38% of patients (Group I), the remainder had normal levels (Group II). Positive ANA were found in 33% of patients in Group I and 26% of patients in Group II. The clinical findings and course of uveitis was similar in both groups. Chronic uveitis was associated to greater levels of CIC as compared to recurrent uveitis among patients in Group I (p less than 0.0001). Also, moderate sequelae from uveitis were associated to higher CIC levels.
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37
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Cuchacovich M, Astorga G, Rojas B, Carvajal P. [Prognostic factors in anterior uveitis]. Rev Med Chil 1986; 114:1035-9. [PMID: 3496644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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38
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Rojas B. An alcohol test for superficial cutaneous sensibility. LEPROSY REV 1984; 55:182. [PMID: 6748849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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39
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Farrior RT, Jarchow RC, Rojas B. Primary and late plastic repair of soft tissue injuries. Otolaryngol Clin North Am 1983; 16:697-708. [PMID: 6355981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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40
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Schenone H, Verdaguer J, Knierim F, Cabello C, Rojas B, Lechuga M, González R, Leclercq N. [Preliminary investigation of toxoplasmosis in mentally deficient boys of Santiago, Chile (author's transl)]. Bol Chil Parasitol 1974; 29:109-11. [PMID: 4455267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Martinez-Manautou J, Giner-Velasquez J, Cortes-Gallegos V, Aznar R, Rojas B, Guitterez-Najar A, Rudel HW. Daily progestogen for contraception: a clinical study. Br Med J 1967; 2:730-2. [PMID: 4164963 PMCID: PMC1841779 DOI: 10.1136/bmj.2.5554.730] [Citation(s) in RCA: 88] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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